Change generate_token default to a serializable class
Django 1.7.1 update
Add organizer fields and migrations
Add a redirect view for the currently logged in player
Fill in organizer when saving an event
Beginnings of permissions and filters
Explicitly add django-braces to requirements
Finish permissions for organizers

This also includes a proof-of-concept public event view. Because events
are public and everybody can see (a limited amount of) information about
them.
Permissions are created so only organizers are allowed to create events.
They can also only see their own events.
Fix migration when me not present
Fix tests
Merge branch 'permissions'